Can punching device



Sept. 3, 1946. 1 HANSEN CAN PUNQHING DEVICE -Filed Aug. 9, 1945Vfactured and used the .United `States -the head of the can with -tureand .a vsuitable venting aperture.

Patented Sept. 3, `1946 UNITED PATE NT OFFICE CN "P UNCHING' DEVICE .Jack'Hansen, Everett, Wash. ApplcaltionAugustlS, 1945,.Serial N0. 609,898

" Claims.

:amended April .30, 19

The invention described herein may 'be `manuby or vfor `the i Governmentof for governmental purposes without thefpayment tomeof any'royaltythereon in accordance With `the provisions of theac'tof vAprilnSO, -1928(ch. 460,45rStat. L. 467/) This invention relates tocan punching devicesand has for its object `to .provide an implement Iof this class whichlwill Vexpeditiously :perforate `the head of a can-.to .a pouring vopening therein.

`provide both a ventingrand The ldevice has particular Yapplication tomilk vcans-of oneesize, but obviously theudimensions of the device maybeenlarged 'or'diminshed solas. lto adopt it for punching .the heads oflarger or smaller cans. Y

In .dispensing .the contents-of a can lof `milk where the milk is to beused in small quantities, such as for tableusait'is advantageous tofpunch a-small dispensing raper- On ythe contents of the-.can-are as whenused .in baking it isradvantageous totprovide alarge other hand, Awhere`the to be dispensed quickly, or cooking,

`pouring aperture in the head of the can as Well as a suitable ventingaperture.

Itis the purpose of this invention toprovide a can punching devicewhich, at `the `option of the operator, will provide in the head ofacaneither a small or a large pouring aperture and in either case a suitableventingaperture, and it is an objectfof the invention to .positionsuchpouring aperturesin the headof thecan directly adjacent the-side wallsubstantial part of the ythereof so as to leave=no head between the`apertures and thesiderwall of the can, in orderthat no substantialportion of =the contents of the can will betrapped in the can whenit isvdesired to empty the same.

With this purpose andobject in View, the -invention consists .ofthe-novel construction ofthe can punching elements of the device asywell as in certain novel combinations of parts, all of `.which willfirst be fully described and afterwards specically pointed out intheappended-claims.

'Referring to the accompanying drawing: Figure 1 is asideelevation ofthedevice partly in vertical section illustrating the implement in theposition of perforating the head offa Vmilk can with a small pouringaperture and a venti ing aperture, the punching lever Vandpunches beingshown in their raised inoperative position in dotted lines.

Figure 2 is Va fragmentaryi elevation. of the I:dievice partly invertical section illustrating lthe .receive the 'punches `or cutters "I,.downward movement of the Ioperating lever -5 of `:March 3, 1`883,as 28;370 0. G. 757i) implement in theposition of perforating thehead of amilk can with a large pouring aperture and a venting aperture.

Figure`3 is a horizontal sectional View through the post and leveractuating plunger on 'line 3-3 of Fig. 2.

Figure 4 is a vertical transverse sectional view through the operatinglever on line 4-4 of Fig. 2; and

'Figure 5is a vertical `transverse sectional view throughthe operatinglever online 5 5 of Fig. 2.

Like numerals of reference indicate the same parts throughout theseveral figures, in Which- I indicates the `device which includes a4`supporting base'2 to receive a can3.

4 indicatesa vertical post fixed to or integral with .the base 2, and `5indicates the operating lever which is pivoted `at 6 to the verticalpost t and which` carries the can punches or cutters "l,

'lil indicates .a plunger mounted on the post 4, whi'chzplungerisactuated by afspring l i which urges the plunger :against the undersideof the .actuating lever 5 to raise `the same into its `normalinoperativeposition, as shownfin dotted lines in Fig. 1.

Provided'onftl'ieipost `4 is Vapair of. arcuate stops l2 shaped to thecontour of the can; 3, to position and center theicanlonthebase 2 so as'to properly r8 and `9 upon as will .be clearly'fapparent from aninspection of `the Yaccompanying drawing.

Referring specically `.to Vthe punches Aor vcutters'1,18andzSQitwill beseen fromfFigures 1 and 2 that the'venting punch 1 is of pointedlcylindrical 'formation and so positioned and Xed on thelever 5that1itperforates the `can 3 close up against Ythe :side Wall 3 thereof, and itwill also `be seen that the Apunch.o1-"cutter "Bis of identical pointedcylindrical fnrmation and so positioned and fixed on the leverf5`thatliu;perforates the can 3 close .up against theside wall`3 of thecan 3*but at a point. diametrically opposite to the perforation formedb-y'the venting punch or cutter l.

`When the operating lever l5 is pressed down on thecan and the can head3 is perforated by the two punches or cutters landt, either one of theperforations formed in the can head '3" may be used as the pouringaperture, since there may be no substantial difference either in thesize of theper'forationsor in their position With relationlto'theside'wallS' of thecan`3, and when the contents of the can are to bedispensed in -small lquantities, these 4two `punches or cutters 1 and 8are employed to perforate the can-head 3" as just described.

When, however, it is desired to provide a large pouring aperture in thecan-head 3 so that the can 3 may be quickly emptied of its contents, thelarge punch or cutter 9 is brought into position for operation.

Referring to Figures 1 and 2, it will be seen that the large punch orcutter 9 is of a pointed and tapered formation; that the side S' of thecutter, when in operative position and adjacent the side-wall 3 of thecan 3 is arcuately shaped substantially equal to the curvature of thecan 3 so that the aperture formed in the can-head 3" conformssubstantially to the contour of the Wall of the can, as will be seenfrom the large dotted aperture 9 in Figure 3. It will also be seen thatthe side 9" of the cutter 9 is angular in formation, so as to give tothe aperture formed thereby two straight portions which meet at a pointor apex, as is also shown at the perforation 9" in Figure 3. Thisprecise cross-sectional form of the large cutter 9 is not important,though the form shown in the drawing and herein described has been foundto be highly7 effective in properly displacing the metal of the can-head3 for providing an effective, fastpouring aperture. The large cutter mayor may not be serrated as that is unimportant though it is thought thatthe form shown in the drawing assists in folding back the tin adjacentthe pouring perforation 9 which is formed by the large cutter 9.

As will also be seen from Figures 1 and 2, the large punch or cutter 9is mounted under the underside of the operating lever 5 on a slide i4which passes through guides l5 xed on the underside of said lever 5, theouter end of the slide I4 terminating in a stop IB which abuts againstthe outermost guide l5 when the large punch or cutter 9 is moved intooperative position. For the convenient shifting of the large punch orcutter 9 into and out of operative position, the operating lever 5 isprovided with a slot 5' (Figs. 2 and 5) through which a headed stud I4'extends for manual manipulation. It will also be seen from Figure 4 thatthe large cutter 9 is provided with a chamber I1 formed through thecenter thereof and suiciently large to house the small cutter 8 entirelywithin the large cutter 9 when the large cutter 9 is moved intooperative punching position, as shown in Figure 2.

When the large cutter 9 is thus in operative position, downward pressureexerted on the operating handle 5 causes the large cutter 9 to provide alarge pouring aperture in the can-head 3, as well as a suitable ventingperforation therein, as shown in Figure 3, while to provide a can with asmall pouring aperture, the large cutter 9 is merely moved outwardly ofthe operating lever 5 into inoperative position shown in Figure l, thusexposing the small cutter 8 for operation.

Having thus described the invention, I do not wish to be understood aslimiting myself to the exact construction shown in the drawing anddescribed herein, as various changes and modifications may be madetherein, and I consider myself clearly entitled to all such changes andmodications as fall within the limit and scope of the appended claims.

I claim:

1. A can punching device including a base for supporting a can to bepunched, a post on the base, an operating lever pivoted to the post, apair of small punches fixed on the operating lever and adapted to punchtwo small perforations in the head of a can adjacent the side wall of acan upon downward pressure applied to the operating lever, to provide apouring aperture and a venting aperture in a can-head, a large punchslidably mounted on the underside of the operating lever, the mountingmeans for said large punch including a slide and guiding means for theslide, a stop on the slide adapted to abut the guiding means to limitthe sliding movement of the large punch, means on the slide to bemanually engaged for sliding the large punch relatively to the operatinglever, the large punch and its mounting means being arranged wherebysaid punch may be moved into and out of operative punching position,said large punch being provided with a chamber sufciently large to houseone of the pair of small punches, the whole arranged whereby, uponmovement of the large punch into operative canpunching position, one ofthe pair of small punches is housed within the large punch and upondownward pressure applied to the operating lever, the large punchprovides a large pouring aperture in a can-head closely adjacent theside wall of a can, and one of the pair of small punches provides aventing aperture therein diametrically opposite to the position of thelarge pouring aperture provided by the large punch.

2. A can punching device including means for supporting a can to bepunched, an operating lever, a pair of small punches fixed on theoperating lever and adapted to punch two small perforations in the headof a can adjacent the side wall thereof upon downward pressure appliedto the operating lever to provide a pouring aperture and a ventingaperture in a can-head, a large punch slidably mounted on the undersideof the operating lever and adapted to be moved into and out of operativeposition over the can-head, said large punch being provided with achamber therein to house one of the said pair of small punches, thewhole arranged whereby movement of the large punch into operativecan-punching position houses one of the said pair of small punches andupon downward pressure applied to the operating lever the large punchprovides a large pouring aperture in a can-head closely adjacent theside wall of a can and one of the said pair of small punches provides aventing aperture in a can-head.

3. A can punching device including an operating lever, a pair of smallpunches on the operating lever and adapted to punch two smallperforations in the head of a can closely adjacent the side wall thereofupon downward pressure applied to the operating lever to provide apouring aperture and a venting aperture, a large punch movably mountedon the operating lever and adapted to be moved into and out ofcan-punching position, said large punch being provided with a chamber tohouse one of the said pair of small punches therein, the Whole arrangedwhereby movement of the large punch into operative canpunching positionhouses one of the said pair of small punches and upon downward pressureapplied to the operating lever the large punch provides a large pouringaperture in the can-head and the unhoused one of the said pair of smallpunches provides a venting aperture in a canhead.

4. A can punching device including an operating lever and a small punchthereon adapted to punch a pouring aperture in a can-head, a large punchmovable on the operating lever, said large punch having a chamber tohouse the small punch therein when it is desired to increase thecapacity of the pouring aperture.

5. A can punching device including an operating lever and a small punchthereon adapted to punch a pouring aperture in a can-head upon actuationof the operating lever, a. large punch movable on the operating leverinto and out of operative position, said large punch having one of itssides formed arcuately to conform substantially to the contour of theside Wall of a can and provided with a. cavity to house the small punchtherein when the large punch is moved into can-punching position.

JACK HANSEN.

